The El Dorado County Sheriff's Office says Mark Alan Dickson fell 50 feet from the Tamarack Express Chair.
"This appears to be an accident," said El Dorado County sheriff's Lt. Les Lovell.
"One of the guide ropes from the zip line became entangled with the adjacent chair lift and ended up catching the chair lift cable and around the female's leg. That may have kept her from getting her thrown out of the chair."
The chair, which was being ridden downhill by the couple, was upended and spilled Dickson onto the rocks, but his wife Rebecca Gonzaga, 47, was able to hang on.
The couple was on their honeymoon and had planned to move to the South Lake Tahoe area.
The ski resort's Web site says the "Heavenly Flyer, a ZipRider experience" is at Adventure Peak.
Participants take the Heavenly gondola to an elevation of 9,156 feet.
From there, participants take the Tamarack Express to get to the zip line take-off deck.
The elevated zip line is billed as the longest such ride in the contiguous 48 states.